Purina® Enrich Plus® Ration Balancing Horse FeedHIGHLY CONCENTRATED NUTRITION FOR EASY KEEPERS HORSES NEED MORE NUTRITION THAN FORAGE ALONE CAN PROVIDE. Some horseswhether due to an efficient metabolism, light workload, or high quality forage based dietcan maintain their weight on hay or pasture with little to no feed. However, forages alone do not provide the necessary amount or balance of all nutrients, creating inconsistencies and deficiencies. This is also true for horses fed unfortified grains